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 Topic: pulley
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 Angular velocity 2012-09-05 From Kyra:A belt connects a pulley of radius 8cm to a pulley of radius 6cm. Each point on the belt is travelling at 24 cm/sec. Find the angular velocity of each pulley.Answered by Penny Nom. The length of a belt around three pulleys 2011-05-18 From Grant:I need to calculate the belt length around these pulleys, please can you help or refer me? Known variables D - Large Pulley Diameter d - Small Pulley Diameter c - Center Distance between D and d T - Tension Pulley Diameter x - Horizontal Distance between T and d' Centers y - Vertical Distance between T and d's Centers I need to calculate the belt length around these pulleys. Kind Regards, GrantAnswered by Harley Weston. Related Rates Problem 2010-01-12 From Neven:A woman raises a bucket of cement to a platform 40 ft above her head by means of a rope 80 ft long that passes over a pulley on the platform. If she holds her end of the rope firmly at head level and walks away at 5ft/s, how fast is the bucket rising when she is 30 ft away from the spot directly below the pulley? (G. F. Simmons, Calculus with Analytic Geometry, pg.142)Answered by Penny Nom. A dead fly is stuck to a belt that passes over two pulleys 2009-03-21 From Jules:A dead fly is stuck to a belt that passes over two pulleys 6 inches and 8 inches in radius. Assuming no slippage,how fast is the fly moving when the large pulley (8 inches) makes 21 revolutions per second ? How many revolutions per second does the small pulley make ? How long will it take the dead fly to travel 1 mile ?Answered by Penny Nom. A belt drives a pulley 2008-11-03 From Rebecca:A point on a belt is moving at the rate of 30 ft/sec and the belt drives a pulley at the rate of 200 rpm. What is the radius of the pulley?Answered by Penny Nom. Find the length of the belt 2007-03-08 From Helen:Find the length of the beltAnswered by Penny Nom. What size pulley would I need? 2006-12-29 From Chris:If I have a motor that's spinning at 950 RPM's with a pulley that's 6in diameter with a belt running to a generator, What size pulley would I need on the generator to make it spin at 3600 RPMAnswered by Penny Nom. Pulleys and belts 2006-10-31 From Lynn:A belt has a linear speed of 32 mph. It is spinning three pulleys. Pulley A has diameter 14 in. radius = 7 inches Pulley B has diameter 26 in. radius = 13 inches Pulley C has radius 3 ft. radius = 36 inches Angular speed in Radians per min for I got Pulley A= .08 rads/min Pulley B= .04 rads/min Pulley C=.01 rads/min How many cm would pulley C travel in 14 seconds? Answered by Penny Nom. Calculating the belt length of a three pulley system 2006-07-16 From Mark:I have a 3 pulley system with sides abc and pulleys ABC. Pulley A has radius of 10cm, pulley B has radius of 20cm, and pulley C has radius of 3cm. The side lengths are: (center to center of pulleys) between pulleys AB = 75cm, between pulleys BC = 100cm, and between pulleys AC = 50cm. I set these side lengths up as (according to law of sines and cosines) a = 100cm, b = 50cm, and c = 75cm. What is the length of the belt required for this system? I need to know how I would set this problem up and solve.Answered by Stephen La Rocque. A belt around two pulleys 2004-12-07 From Ian:a belt is stretched around two pulleys whose centers are d units apart and whose radii are R and r respectively (obviously R+r

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